I have in my shed a grey 3cyl jonno was told 25hp but it seems too big for that hp, most ID is missing i found on the round shiny plug (between the top two cyls) G4687343 The motor is pull start, tiller steer, manual gearchange, has a saftey cutout button thingy? on the tiller, 4 blade prop & is very heavy for me to lift, maybe getting old? Cheers Ray.